In Planned Parenthood of Southeastern Pa. v. Casey, 505 U.S. 833, 112 S. Ct. 2791, 120 L. Ed. 2d 674 (1992), the Court reaffirmed the substantive force of the liberty protected by the Due Process Clause. The Casey decision again confirmed that our laws and tradition afford constitutional protection to personal decisions relating to marriage, procreation, contraception, family relationships, child rearing, and education. Id., at 851, 112 S. Ct. 2791. In explaining the respect the Constitution demands for the autonomy of the person in making these choices, we stated as follows: "These matters, involving the most intimate and personal choices a person may make in a lifetime, choices central to personal dignity and autonomy, are central to the liberty protected by the Fourteenth Amendment. At the heart of liberty is the right to define one's own concept of existence, of meaning, of the universe, and of the mystery of human life. Beliefs about these matters could not define the attributes of personhood were they formed under compulsion of the State." Ibid. Persons in a homosexual relationship may seek autonomy for these purposes, just as heterosexual persons do. The decision in Bowers would deny them this right. Id. at 2481-82